Overpass Light Brigade (OLB) is an activist collaborative public art project based in Milwaukee, Wisconsin, and organized by American artists Lane Hall and Lisa Moline and photographer Joe Brusky.

[17][18][19][20] Appearances have also included picketing with striking Palermo's Pizza workers,[3] a pedestrian bridge to the Milwaukee Art Museum,[1] an event with Nuns on the Bus,[21] and vigils mourning the 2012 Wisconsin Sikh temple shooting[5][22][23][24] and the Boston Marathon Bombing.

[26] When images of the sign were circulated by mainstream media outlets including The Rachel Maddow Show[8] and CNN,[27] Hall and Moline decided to continue their efforts.

[9] For the artists, their work with the Overpass Light Brigade is a "demonstration of citizen engagement... a Situationist paradigm of performativity within the contested and liminal zones of public space"[28] and a navigation of the tactics of visibility.

A founder of the artistic and political movement Situationist International, he sought, through the construction of "situations," to create multiple strategies for reclaiming an individual's self-determination from the sedative effects of ubiquitous spectacle.

[30] Hall and Moline had a history of making collaborative work, often about environmental issues and animal subjects, but rarely pushed beyond the boundaries of traditional art spaces.

[2][35][non-primary source needed][36] Hall emphasizes the importance for groups to consider how a collection of lighted letters can be recombined; to document the action through quality (night-time) photographs, videos, and blog posts; and to use social media to amplify the reach of the message.

[4][48][49][50][51] Also in 2013, Planned Parenthood, with 371 Productions and documentary filmmaker Brad Lichtenstein, created the "Be Visible" campaign, with a video highlighting women's stories and featuring the Overpass Light Brigade.